Can Definity 8410D phones work with a Partner 3.0 System?

The reason im asking, is that a friend of mine just leased a building with an older Partner 3.0 system and does not have the correct phones. The phones he has is are the Definity 8410D's. I'm new to the whole telecommunications role, so give this "newby" some slack [Linked Image from sundance-communications.com].




------------------
what was once tame is now wild

what was once tame is now wild